Biochemical biomarkers in barnacles Balanus improvisus: pollution and seasonal effects.
Mar Environ Res
; 103: 74-9, 2015 Feb.
Article
em En
| MEDLINE
| ID: mdl-25460064
Biochemical biomarkers were evaluated in the barnacle Balanus improvisus (Crustacea: Cirripedia) sampled from both polluted and reference sites in the Patos Lagoon Estuary, Southern Brazil. During winter, higher glutathione S-transferase (GST) activity was recorded in the barnacles from the polluted sites, indicating environmental exposure to contaminants. Relatively low lipid peroxide levels (LPO) were also observed in barnacles from polluted sites, indicating that oxidative stress by lipid peroxidation was not a major threat in barnacles from those sites. Seasonal differences in the GST and total oxyradical scavenging capacity (TOSC) could have contributed to the low LPO levels in the summer relative to the levels in the winter. Catalase activity and metallothionein levels were not affected by contamination or seasonality. The seasonal changes observed in biomarker responses were paralleled by the differences in temperature, which could have affected physiological responses, including the balance between pro-oxidants and antioxidants.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Estações do Ano
/
Thoracica
/
Poluentes Químicos da Água
/
Monitoramento Ambiental
Limite:
Animals
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Mar Environ Res
Assunto da revista:
BIOLOGIA
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SAUDE AMBIENTAL
/
TOXICOLOGIA
Ano de publicação:
2015
Tipo de documento:
Article
País de publicação:
Reino Unido